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Experimental demonstration of transparent microwave absorber based on graphene 基于石墨烯的透明微波吸收体的实验演示
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585411
D. Yi, Xingchang Wei, Yi-Li Xu
{"title":"Experimental demonstration of transparent microwave absorber based on graphene","authors":"D. Yi, Xingchang Wei, Yi-Li Xu","doi":"10.1109/IEEE-IWS.2016.7585411","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585411","url":null,"abstract":"A novel transparent microwave absorber is proposed in this paper. Fluorine-doped tin oxide glass, glass and monolayer graphene are applied as the reflector layer, substrate and absorbing layer respectively to form a Salisbury absorber. The performance of the absorber is measured by the rectangular waveguide. An improved equivalent circuit model is proposed to analyze the transparent absorber. There is a good correlation between absorption coefficients obtained from the equivalent circuit model, 3-D full wave simulation and measurement. As high as 95% incident power can be absorbed by using the proposed absorber.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128364820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 11
Design of K-band radar front-end for water level measurement k波段雷达水位测量前端设计
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585469
Chen Xu, F. Lina, Xu Feng, He Chunjiu
{"title":"Design of K-band radar front-end for water level measurement","authors":"Chen Xu, F. Lina, Xu Feng, He Chunjiu","doi":"10.1109/IEEE-IWS.2016.7585469","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585469","url":null,"abstract":"Water level is an important parameter for river hydrological monitoring. This paper introduces a compact K-band front-end with discrete components for river water level measurement. The radar front-end includes micro-strip antenna array, voltage-controlled oscillator and schottky diode mixer. To reduce the radar volume, only one micro-strip antenna array is used. To improve phase noise performance of the VCO, a compact mushroom ELV-EBG structure is used instead of conventional resonator. The results demonstrate that the antenna array has a gain of 23.8dB and three-decibel bandwidth in azimuth and elevation are both 11o; the output power of the voltage-controlled oscillator is more than 10dBm, and the phase noise is -95.6dBc/Hz@1MHz; the conversion loss of mixer is 7.18dB. The design satisfies the requirement of water level measurement radar applications.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128485810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
24-GHz biomedical radar on flexible substrate for ISAR imaging 用于ISAR成像的柔性基板24ghz生物医学雷达
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585400
Zhengyu Peng, J. Muñoz-Ferreras, R. Gómez‐García, L. Ran, Changzhi Li
{"title":"24-GHz biomedical radar on flexible substrate for ISAR imaging","authors":"Zhengyu Peng, J. Muñoz-Ferreras, R. Gómez‐García, L. Ran, Changzhi Li","doi":"10.1109/IEEE-IWS.2016.7585400","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585400","url":null,"abstract":"A 24-GHz radar system for biomedical applications is designed, fabricated, and tested. The proposed radar system includes a flexible radio frequency (RF) board and a rigid baseband board. The RF board integrates two 4×4 patch arrays, a voltage controlled oscillator (VCO), two low noise amplifiers (LNA), and a six-port structure. The baseband board has baseband amplifiers as well as an on-board sawtooth voltage generator (SVG). The SVG generates a 155-Hz sawtooth voltage signal to control the VCO. A 450-MHz bandwidth frequency ramp with a center frequency around 24 GHz is transmitted. With the proposed radar system, the inverse synthetic aperture radar (ISAR) imaging method is used to track moving targets in a crowded environment with stationary clutter. The theory of ISAR imaging is detailed in this paper. Two experiments were carried out to reveal the capabilities of the radar system in tracking single and multiple moving targets. The radar system is featured as being flexible and portable. The complete radar system has overall dimensions of 118mm×45mm×15mm.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116509440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 17
S-parameter based device-level C-V measurement of p-i-n single-drift IMPATT diode for millimeter-wave applications 基于s参数的毫米波应用中p-i-n单漂移IMPATT二极管的器件级C-V测量
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585419
Wogong Zhang, M. Oehme, K. Kostecki, K. Matthies, V. Stefani, Ashraful I. Raju, D. Noll, V. S. Senthil Srinivasan, R. Korner, E. Kasper, J. Schulze
{"title":"S-parameter based device-level C-V measurement of p-i-n single-drift IMPATT diode for millimeter-wave applications","authors":"Wogong Zhang, M. Oehme, K. Kostecki, K. Matthies, V. Stefani, Ashraful I. Raju, D. Noll, V. S. Senthil Srinivasan, R. Korner, E. Kasper, J. Schulze","doi":"10.1109/IEEE-IWS.2016.7585419","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585419","url":null,"abstract":"Two different approaches of capacitance-voltage (C-V) measurement were applied to the fabricated single-drift (SD) impact-ionization avalanche transit-time (IMPATT) structures. From both the C-V results, the carrier concentrations of depleted space-charge-region (SCR) width characteristics were calculated. According to the epitaxial thickness and the doping concentration of the lightly n-doped layer, the approach applied to a 30 × 2 μm2 IMPATT device, which is based on small-signal S-parameter characterization (0.04-40 GHz), showed better agreement compared with the approach applied to a C-V structure (0.64 mm2) using the conventional low frequency (1 MHz) C-V instrument. Additionally, the E-band IMPATT operation of the 30 × 2 μm2 device has been well modelled with the capacitance value extracted from the S-parameter based C-V measurement. The good agreement between device modelling and measurement within frequency range 0.04-110 GHz shows the reliability of the small-signal S-parameter device-level C-V measurement for real mm-wave application scenarios.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134044434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A wideband microstrip balanced-to-single-ended out-of-phase power divider 一种宽带微带平衡到单端失相功率分配器
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585441
Jianpeng Lu, Jin Shi, Qinghua Cao
{"title":"A wideband microstrip balanced-to-single-ended out-of-phase power divider","authors":"Jianpeng Lu, Jin Shi, Qinghua Cao","doi":"10.1109/IEEE-IWS.2016.7585441","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585441","url":null,"abstract":"A wideband microstrip balanced-to-single-ended out-of-phase power divider (BTSEOOPPD) is proposed in this paper. Two types of two-stage cascaded BTSEOOPPD are studied, which both show wider bandwidth comparing with the single stage one. Two prototypes of the two types of two-stage BTSEOOPPD are analyzed, designed and compared, and type II shows wider isolation bandwidth than that of type I.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114613067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Adaptive waveform optimization algorithm based on UWB MIMO radar 基于UWB MIMO雷达的自适应波形优化算法
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585459
C. Ji, Yaoliang Song, Qiang Du
{"title":"Adaptive waveform optimization algorithm based on UWB MIMO radar","authors":"C. Ji, Yaoliang Song, Qiang Du","doi":"10.1109/IEEE-IWS.2016.7585459","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585459","url":null,"abstract":"For the issue of deterioration in detection performance caused by dynamically changing environment in UWB MIMO radar, we propose a novel adaptive waveform design which is aimed to improve the ability of discriminating target and clutter from the radar scene. Firstly, we consider using a Dirichlet process mixture model (DPMM)-based clustering approach to discriminate individual extended targets. Then we apply the minimization mutual-information (MI) strategy between individual targets echoes to select the best waveform from an ensemble of UWB waveforms for transmission. With this approach, the radar system constantly learns about its surroundings and adopts its operational mode accordingly based upon the MI minimization criterion. Finally, simulation results demonstrate that the optimal design method brings an improvement in the target detection ability and target discrimination capability.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126864958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
MMIC GaN power amplifier with bidirectional operation for RF-to-DC conversion 具有双向操作的射频到直流转换的MMIC GaN功率放大器
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585421
Tiago Moura, W. Jang, P. Cruz, D. Belo, N. Carvalho, S. Chevtchenko, B. Janke, J. Wurfl
{"title":"MMIC GaN power amplifier with bidirectional operation for RF-to-DC conversion","authors":"Tiago Moura, W. Jang, P. Cruz, D. Belo, N. Carvalho, S. Chevtchenko, B. Janke, J. Wurfl","doi":"10.1109/IEEE-IWS.2016.7585421","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585421","url":null,"abstract":"GaN technology has shown improved characteristics at high power and high frequency conditions, playing a key opportunity in the space industry. In this way, this paper presents a GaN-based MMIC power amplifier (PA), designed for X-band space applications. The PA design consists of a single stage class-B and achieves 10.5 dB gain at 9 GHz and an output power of 32 dBm. It is verified that the MMIC can operate also as a rectifier, with a conversion efficiency of around 40 % for a CW input signal of 28 dBm at 8 GHz. Additionally, two-tone measurements are performed and compared to the CW ones.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126348015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Wide-band divide-by-4 injection-locked frequency divider using RLC resonator and capacitive cross-coupled oscillator 采用RLC谐振腔和电容交叉耦合振荡器的宽带4分频锁注入分频器
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585448
S. Jang, W. Lai, Wei-Chi Lai, M. Juang
{"title":"Wide-band divide-by-4 injection-locked frequency divider using RLC resonator and capacitive cross-coupled oscillator","authors":"S. Jang, W. Lai, Wei-Chi Lai, M. Juang","doi":"10.1109/IEEE-IWS.2016.7585448","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585448","url":null,"abstract":"A wide locking range divide-by-4 injection-locked frequency divider (ILFD) using a standard 0.18 μm CMOS process is presented. The ILFD circuit is realized with a capacitive cross-coupled n-core MOS dual-resonance RLC-tank oscillator to extend the locking range. The core power consumption of the ILFD core is 11.872 mW. The divider's free-running frequency has dual-bands at 2.87 and 2.69 GHz by switching the varactor's control bias, and at the incident power of 0 dBm the locking range is 3.2 GHz (28.82%), from the incident frequency 9.5 to 12.7GHz.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129088216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
A low-cost, system-on-chip for Optical Time Domain Reflectometry (OTDR) 用于光时域反射计(OTDR)的低成本片上系统
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585445
Jingbo Shi, Nan Qi, Qianqian Yang, Hui Guo, Guangyao Yang, Jiangbing Du, Qingwen Liu, Zuyuan He, Rui Bai, P. Chiang, Zhiliang Hong
{"title":"A low-cost, system-on-chip for Optical Time Domain Reflectometry (OTDR)","authors":"Jingbo Shi, Nan Qi, Qianqian Yang, Hui Guo, Guangyao Yang, Jiangbing Du, Qingwen Liu, Zuyuan He, Rui Bai, P. Chiang, Zhiliang Hong","doi":"10.1109/IEEE-IWS.2016.7585445","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585445","url":null,"abstract":"A single-chip Optical Time Domain Reflectometer (OTDR) system-on-chip (SoC) for fiber-optic fault detection and localization is presented. The IC can be configured into several modes including high-performance mode (external modulator and expensive off-chip laser / APD), and low-cost mode (low power/gain and inexpensive laser / APD). Experimental optical measurements demonstrate that the maximum detectable fiber length of the proposed OTDR SoC can be as long as 25km, while the spatial resolution can achieve 2.5m, 4m and 10m, for various configurations. Compared with current discrete solutions on the market, the proposed OTDR system can reduce the cost by 100x, area by 5x, and power consumption by 4x.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114432200","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
A 11-bit 1.2V 40.3μW SAR ADC with self-dithering technique 采用自抖动技术的11位1.2V 40.3μW SAR ADC
2016 IEEE MTT-S International Wireless Symposium (IWS) Pub Date : 2016-03-14 DOI: 10.1109/IEEE-IWS.2016.7585432
Shuangshuang Zhang, Ting Li, Lele Jin, Jiaqi Yang, Lin He, F. Lin
{"title":"A 11-bit 1.2V 40.3μW SAR ADC with self-dithering technique","authors":"Shuangshuang Zhang, Ting Li, Lele Jin, Jiaqi Yang, Lin He, F. Lin","doi":"10.1109/IEEE-IWS.2016.7585432","DOIUrl":"https://doi.org/10.1109/IEEE-IWS.2016.7585432","url":null,"abstract":"This paper presents a low-power 11-bit 1-MS/s successive approximation register (SAR) analog-to-digital converter (ADC) that uses a self-dithering technique. The LSBs is employed as a dither to improve the resolution. Compared to converters that use the conventional dithering architecture, simulation results show that the proposed self-dithering technique improve the DNL performance with simplified hardware. The prototype is fabricated in 180nm 1P6M CMOS with MOM capacitor. At a 1.2-V supply and 1 MS/s, the post-layout simulation result shows an SNDR of 63.8 dB and consumes 40.3μW, and a figure of merit (FOM) of 32 fJ/conversion-step. The total area of the chip is 1 mm×1 mm.","PeriodicalId":185971,"journal":{"name":"2016 IEEE MTT-S International Wireless Symposium (IWS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127070770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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